CN110549958B - Resin molded article - Google Patents
Resin molded article Download PDFInfo
- Publication number
- CN110549958B CN110549958B CN201910287750.4A CN201910287750A CN110549958B CN 110549958 B CN110549958 B CN 110549958B CN 201910287750 A CN201910287750 A CN 201910287750A CN 110549958 B CN110549958 B CN 110549958B
- Authority
- CN
- China
- Prior art keywords
- side wall
- mounting
- resin molded
- base material
- wall portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011347 resin Substances 0.000 title claims abstract description 77
- 229920005989 resin Polymers 0.000 title claims abstract description 77
- 239000000463 material Substances 0.000 claims abstract description 54
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/04—External Ornamental or guard strips; Ornamental inscriptive devices thereon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
- F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
- F16B5/0657—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship at least one of the plates providing a raised structure, e.g. of the doghouse type, for connection with the clamps or clips of the other plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
- B62D25/12—Parts or details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/06—Releasable fastening devices with snap-action
- F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
- F16B21/082—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part the stud, pin or spigot having two resilient parts on its opposite ends in order to connect two elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/06—Releasable fastening devices with snap-action
- F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
- F16B21/086—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part the shank of the stud, pin or spigot having elevations, ribs, fins or prongs intended for deformation or tilting predominantly in a direction perpendicular to the direction of insertion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
- F16B2/22—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening of resilient material, e.g. rubbery material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention provides a resin molded article, which has a mounting part protruding from the back surface of a base material and mounted with a mounting component. The mounting portion has: two side wall parts rising from the back surface and facing each other; a connecting portion connecting ends of the side wall portions; and a mounting base portion that covers the side wall portions and the connection portion and fixes the mounting member. A gap is formed between the step portion, the 2 nd side wall portion, the connection portion and the base material.
Description
Technical Field
The present invention relates to a technique for producing a resin molded article having an external appearance surface that can be visually confirmed from the outside.
Background
For example, a resin molded product is used as an exterior material of a vehicle. The resin molded product is a design part manufactured by resin molding such as injection molding. When a portion including the exterior surface is used as a base material, a mounting portion for mounting a mounting component is formed on the back surface of the base material. By attaching the attachment member to the attachment portion, the attachment member is inserted into the vehicle body, and the resin molded product can be attached to the vehicle body. A conventional technique related to such a resin molded product is disclosed in japanese unexamined patent publication No. 2003-063121.
The resin molded product shown in japanese patent application laid-open No. 2003-063121 has a mounting portion protruding from the back surface of the base material and mounted with a mounting member for mounting to the vehicle body. The base material and the mounting portion are integrally formed by injection molding. That is, the resin molded article is produced by filling a mold with a molten resin and cooling the resin.
The mounting portion has a box shape with one surface opened. By forming the mounting portion in such a shape, high mounting rigidity can be ensured.
In the resin molded article shown in japanese unexamined patent publication No. 2003-063121, the side wall of the box-shaped mounting portion is formed to stand up from the base material. When the resin is cooled and shrunk at the boundary between the side wall and the base material, a phenomenon called shrinkage may occur in which the appearance surface is recessed along the end of the side wall. Not only the exterior material of the vehicle but also the exterior surface thereof is shrunk, and the aesthetic appearance of the resin molded product is reduced.
Disclosure of Invention
The invention aims to provide a resin molding product capable of ensuring high aesthetic property.
According to the present invention, there is provided a resin molded article characterized in that a base material having an appearance surface that can be visually confirmed from the outside and an attachment portion protruding from the back surface of the base material and having an attachment member attached thereto are integrally formed,
the mounting portion has a box shape with one surface opened, and has: two side wall parts facing each other; a connecting portion connecting ends of the side wall portions; a mounting base portion that covers the side wall portions and the connection portion and is capable of fixing the mounting member; and an opening portion surrounded by the side wall portion and the mounting base portion,
at least one of the two side wall portions has: a 1 st side wall portion rising from the back surface at a position adjacent to the opening portion; a step portion extending from an end of the 1 st side wall portion toward the opposing side wall portion; and a 2 nd side wall portion extending in a direction away from the 1 st side wall portion with an end of the step portion as a starting point,
a gap is formed between the connection portion, the step portion, and the 2 nd side wall portion and the base material.
In the present invention, the 1 st side wall portion stands up from the back surface of the base material, and a gap is formed between the step portion, the 2 nd side wall portion, and the connection portion and the base material. The 1 st side wall portion adjacent to the opening portion stands up from the back surface. This ensures the mounting rigidity of the portion adjacent to the opening. On the other hand, a gap is formed between the connecting portion, the step portion, and the 2 nd side wall portion and the base material. By reducing the area where shrinkage is likely to occur, a resin molded article that can ensure high aesthetic properties can be provided.
If the side wall portion is formed in a flat plate shape, only a portion near the opening portion is formed continuously with the base material. At this time, if the slide mold is slid from the portion as the opening, the mold cannot be separated from the side wall. I.e. as barbs (barbs). In order to disengage the mold, a plurality of sliding molds are required. In the present invention, there are a stepped portion and a 2 nd side wall portion. Thus, the 1 st side wall portion and the back surface can be continuously raised, and a space can be formed between the connection portion, the step portion, and the 2 nd side wall portion and the base material by one slide die. Since the resin molded article can be produced with a small number of slide molds, the production cost of the resin molded article can be reduced.
Drawings
Fig. 1 is a perspective view of a vehicle mounted with the resin molded product of example 1.
Fig. 2 is a perspective view of the resin molded article shown in fig. 1.
Fig. 3 is a cross-sectional view taken along line 3-3 of fig. 1.
Fig. 4 is an enlarged view of a portion 4 of fig. 3.
Fig. 5 is a 5-way view of fig. 4.
Fig. 6 is a 6-way view of fig. 4.
Fig. 7 is a diagram illustrating a main mold used for manufacturing the resin molded product shown in fig. 1.
Fig. 8 is a diagram illustrating a slide mold provided slidably with respect to the main mold shown in fig. 7.
Fig. 9 is a diagram illustrating the cavity formation process.
Fig. 10 is a diagram illustrating a resin filling process.
Fig. 11 is a perspective view of the mounting portion of the resin molded product of example 2.
Fig. 12A is a perspective view of the resin molded article of example 3 as seen from below.
Fig. 12B is a perspective view of the resin molded article shown in fig. 12A from above.
Fig. 13 is a view illustrating a mounting portion of the resin molded product of example 4.
Fig. 14 is a view illustrating a mounting portion of the resin molded product of example 5.
Description of the reference numerals
10. 10A, 10B, 10C, 10D: a resin molded article;
11: a substrate;
11a: appearance surface;
11b: a back surface;
20. 20A, 20B, 20C, 20D: a mounting part;
21. 21B: a 1 st side wall portion;
22: a step part;
23: a 2 nd side wall portion;
24: a connection part;
25: a side wall portion;
26. 26A: a connecting part;
26C: a 2 nd side wall portion connecting portion;
26D: a step portion connecting portion;
27: a mounting base portion;
28: an opening portion;
bo: a vehicle body (mounted member);
cl: clamps (mounting members);
sp: a void.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description, the right and left refer to the right and left with respect to the occupant of the vehicle to which the resin molded product is attached, and the front and rear refer to the front and rear with respect to the traveling direction of the vehicle. In the figure, fr denotes the front, rr denotes the rear, le denotes the left viewed from the occupant, ri denotes the right viewed from the occupant, up denotes the upper, and Dn denotes the lower.
Example 1 ]
Reference is made to fig. 1. For example, the resin molded article 10 is provided in the rear portion of the vehicle Ve. The resin molded article 10 is a resin design member that can be visually confirmed from the outside of the vehicle Ve.
Reference is made to fig. 2 and 3. Fig. 2 shows the resin molded article 10 in a state of being viewed from the front. Therefore, the left-right direction is opposite to fig. 1.
The resin molded article 10 is integrally formed of a base material 11 and a mounting portion 20, wherein the base material 11 has an exterior surface 11a that can be visually confirmed from the outside, and the mounting portion 20 protrudes from a rear surface 11b of the base material 11. A plurality of mounting portions 20 are formed on the back surface 11b of the base material 11. Here, the back surface 11b of the base material 11 is the back surface of the exterior surface 11 a.
Hereinafter, the mounting portion 20 formed in the center will be described in detail. The other mounting portions 20 are not described, and the same configuration as the mounting portion 20 formed in the center may be employed. In addition, the direction in which each of the mounting portions 20 opens may be appropriately selected.
Refer to fig. 3. The resin molded product 10 is attached to a vehicle body Bo (attached member Bo) via a jig C1 (attachment member C1) attached to the attachment portion 20. The attachment portion 20 may be a portion to which a clip Cl is attached, and the clip C1 is used for attachment to the vehicle body Bo.
Refer to fig. 4 and 5. The mounting portion 20 has a box shape with one surface opened. The mounting portion 20 includes: two side wall portions 25, 25 which are opposed to each other; a connecting portion 24 connecting the ends of the side wall portions 25, 25; connection portion connecting portions 26, 26 for connecting the connection portion 24 to the back surface 11b of the base material 11; a mounting base portion 27 that covers the side wall portions 25, 25 and the connection portion 24 and is capable of fixing a clip Cl (see fig. 2); and an opening 28 as an opening surrounded by the side wall 25 and the mounting base 27.
Reference is made to fig. 5 and 6. The side wall portions 25, 25 have: the 1 st side wall portions 21, 21 standing from the back surface 11b of the base material 11 at positions adjacent to the opening portions 28; step portions 22, 22 extending from the end portions of the 1 st side wall portions 21, 21 toward the opposing side wall portions 25, 25; and 2 nd side wall portions 23, 23 extending in a direction away from the 1 st side wall portions 21, 21 with the distal ends of the step portions 22, 22 as starting points.
The two 1 st side wall portions 21, 21 are opposed to each other. The side wall portion 25 may have at least one of the 1 st side wall portion 21, the step portion 22, and the 2 nd side wall portion 23. For example, when the mounting portion 20 is formed at the end of the base material 11, shrinkage may not occur on the appearance surface. In this case, the shape of the side wall portion 25 formed at a portion where shrinkage is unlikely to occur may be arbitrarily selected.
Refer to fig. 5. The 1 st side wall portions 21, 21 have: 1 st side wall main body portions 21a, 21a connected to the stepped portions 22, 22; and 1 st side wall portion connecting portions 21b, 21b connecting lower portions of the 1 st side wall portion main body portions 21a, 21a to the rear surface 11b of the base material 11. The 1 st side wall portion connecting portions 21b, 21b have a smaller wall thickness than the 1 st side wall portion main portions 21a, 21 a. The outer surfaces of the 1 st side wall main body portions 21a, 21a and the outer surfaces of the 1 st side wall connecting portions 21b, 21b are continuous and on the same surface.
The direction perpendicular to the thickness direction of the 1 st side wall main body portion 21a is set as the longitudinal direction. The 1 st side wall portion connecting portions 21b, 21b are formed on the entire lower portions of the 1 st side wall portion main body portions 21a, 21a with reference to the longitudinal direction.
The 1 st side wall portion connecting portions 21b, 21b may be formed on a part of the lower portions of the 1 st side wall portion main body portions 21a, 21a with respect to the longitudinal direction. When one end of the 1 st side wall main body portion 21a, 21a is connected to the step portion 22 and the other end is the opposite end, the 1 st side wall connecting portion 21b, 21b is preferably formed at a part of the lower portion including at least one end.
Refer to fig. 6. The length L2 of the 1 st side wall portions 21, 21 is smaller than half the length L1 of the side wall portion 25. I.e., L1 > L2.times.2. In other words, the length L2 of the 1 st side wall portion 21 is shorter than the length L3 of the 2 nd side wall portion 23.
The step portions 22, 22 extend from the end portions of the 1 st side wall portions 21, 21 in directions approaching each other. The step portions 22, 22 are formed substantially perpendicular to the 1 st side wall portions 21, 21 and substantially parallel to the connecting portion 24.
The 2 nd side wall portions 23, 23 are formed substantially perpendicular to the step portions 22, 22 and the connecting portion 24. The 2 nd side wall portions 23, 23 extend in the same direction as the 1 st side wall portions 21, 21.
Refer to fig. 3. The connection portion 24 connects the 2 nd side wall portions 23, 23 formed opposite to each other. The connection portion 24 has: a 1 st connection portion 24a formed continuously with the mounting base portion 27 and extending toward the rear surface 11b of the base material 11; a 2 nd connecting portion 24b formed at a position distant from the opening 28 with respect to the 1 st connecting portion 24 a; and a 3 rd connection portion 24c that connects these 1 st connection portion 24a and 2 nd connection portion 24b. The 1 st to third connecting portions 24a to 24c extend in mutually different directions.
The connection portion connecting portion 26 is formed continuously with the 2 nd connection portion 24b, and is formed to the base material 11. The upper surface (outer surface) of the connecting portion coupling portion 26 is continuous with the upper surface (outer surface) of the 2 nd connecting portion 24b. The wall thickness W1 of the connecting portion 26 is thinner than the wall thickness W2 of the connecting portion 24.
The direction perpendicular to the thickness direction of the connection portion 24 is defined as the longitudinal direction. The connecting portion 26 is formed at a part of the lower portion of the connecting portion 24 with reference to the longitudinal direction of the connecting portion 24.
Refer to fig. 6. The mounting base portion 27 is formed in a substantially U-shape and has a wall-like shape, and a mounting member fitting portion 27a into which the clamp C1 (see fig. 3) is fitted is formed. The clip Cl is slidably fitted into the mounting member fitting portion 27a.
Reference is made to fig. 3 and 5. A space Sp is formed between the step portion 22, the 2 nd side wall portion 23, and the connection portion 24 and the rear surface 11b of the base material 11. The gaps Sp are formed between the step portion 22, the 2 nd side wall portion 23, and the connection portion 24, respectively, and the rear surface 11b of the base material 11.
The resin molded article 10 described above is manufactured by injection molding, for example. The mold used in molding will be described.
Refer to fig. 7 and 8. The resin molded product manufacturing mold Mo is used for manufacturing the resin molded product 10 (see fig. 2), and the slide mold 60 is provided slidably with respect to the main mold 40.
Refer to fig. 7. The main mold 40 is one of a fixed mold and a movable mold, and can be engaged with the other mold to form a cavity. In the case where the main mold 40 is a movable mold, the main mold 40 is provided so as to be movable in the forward and reverse directions of the base material 11 (see fig. 3). A mounting portion corresponding portion 41 having a shape corresponding to the outer periphery of the mounting portion 20 (see fig. 3) is concavely formed on the main mold 40.
Fig. 8 is also referred to. The slide mold 60 has a substantially box shape, and is provided slidably toward the mounting portion corresponding portion 41. The slide mold 60 is movable in the up-down direction of the base material 11. That is, the sliding direction of the sliding mold 60 is different from the direction in which the movable mold as the main mold 40 moves. By bringing the slide mold 60 close to the mounting portion corresponding portion 41, a space (cavity) corresponding to the shape of the mounting portion 20 is formed between the slide mold 60 and the mounting portion corresponding portion 41. The molten resin is filled in the cavity formed and cooled to produce a resin molded article 10 (see fig. 2).
Refer to fig. 8. The slide mold 60 has: a pair of 1 st side wall surfaces 61 which constitute a part of the side surfaces; a step surface 62 extending from the ends of the 1 st side wall surfaces 61 in a direction approaching each other; a 2 nd side wall surface 63 extending in a direction away from the 1 st side wall surface 61 with the distal ends of the step surfaces 62 as starting points; a connection surface 64 connecting the ends of the 2 nd side wall surfaces 63; an upper surface 67 covering the 1 st side wall surface 61, the step surface 62, the 2 nd side wall surface 63, and the connection surface 64; and a protruding portion 69 protruding outward from the lower portions of the 1 st side wall surface 61, the step surface 62, the 2 nd side wall surface 63, and the connection surface 64.
At the end of the protruding portion 69, protruding portion wall-missing portions 69a, 69a formed in a wall-missing shape are formed.
Fig. 9 is also referred to. The portion of the protruding portion 69 located below the 1 st side wall surface 61 is separated from the mounting portion corresponding portion 41, and the cavities Ca, ca are formed between the mounting portion corresponding portion 41. The portion of the protruding portion 69 located below the 2 nd side wall surface 63 and the stepped surface 62 is closely attached to the mounting portion corresponding portion 41. Therefore, the resin is not filled in this portion. The portion of the protruding portion 69 located below the connection surface 64 is closely attached to the mounting portion corresponding portion 41 except for the protruding portion wall lacking portions 69a, 69a. In other words, the protruding portion missing wall portions 69a, 69a are separated from the mounting portion corresponding portion 41, and the cavities Ca, ca are formed between the protruding portion missing wall portions and the mounting portion corresponding portion 41.
Referring to fig. 4 and 10. By filling the cavity Ca (see fig. 9) with a resin, the 1 st side wall portion 21 continuous with the base material 11 can be formed. Further, the connecting portion 26 continuous with the base material 11 and thinner than the connecting portion 24 can be formed.
The resin molded article 10 described above achieves the following effects.
Refer to fig. 4. The 1 st side wall portion 21 is erected from the rear surface 11b of the base material 11, and a space Sp is formed between the step portion 22, the 2 nd side wall portion 23, and the connection portion 24 and the base material 11. The 1 st side wall portion 21 adjacent to the opening 28 stands from the back surface 11b of the base material 11. This ensures the mounting rigidity of the portion adjacent to the opening 28. On the other hand, a gap Sp is formed between the connecting portion 24, the step portion 22, and the 2 nd side wall portion 23 and the base material 11. By reducing the area where shrinkage is likely to occur, the resin molded article 10 can be provided which can ensure a high aesthetic property.
Referring to fig. 6 and 10. It is assumed that the side wall portion 25 is formed in a flat plate shape, and only a portion near the opening 28 is formed continuously with the base material 11. At this time, if the slide mold 60 is slid from the portion as the opening 28, the mold cannot be released from the side wall 25. I.e. as barbs (barbs). In order to demold the slide mold, a plurality of slide molds are required. In the present invention, the side wall portion 25 has a stepped portion 22. Accordingly, the 1 st side wall portion 21 and the rear surface 11b of the base material 11 can be raised continuously, and the space between the connecting portion 24, the step portion 22, and the 2 nd side wall portion 23 and the base material 11 can be formed to any size by one slide die. Since the resin molded product can be manufactured with a small number of slide molds, the manufacturing cost of the resin molded product 10 can be reduced.
Further, as described above, since the stepped portion 22 is formed, the occurrence of barbs can be prevented. By adjusting the slide die, the length and thickness of the connecting portion 26 can be easily adjusted. By performing adjustment to gradually lengthen or thicken the connecting portion 26, occurrence of shrinkage can be suppressed, and sufficient mounting rigidity can be ensured.
Refer to fig. 3. The outer surface of the connecting portion 26 is continuous with the outer surface of the connecting portion 24, and the wall thickness of the connecting portion 26 is thinner than the wall thickness of the connecting portion 24. By increasing the mounting rigidity of the mounting portion 20, the wall thickness can be reduced, and the occurrence of shrinkage can be suppressed. Further, by forming the outer surface of the connecting portion 26 to be coplanar with the outer surface of the connecting portion 24, the shape of the molding die can be simplified.
The length L2 of the 1 st side wall portion 21 is shorter than the length L3 of the 2 nd side wall portion 23. By making the length L2 of the 1 st side wall portion 21 shorter than the length of the 2 nd side wall portion 23, the portion where shrinkage is likely to occur can be further reduced, and a high aesthetic property of the resin molded product 10 can be ensured.
Next, embodiment 2 will be described with reference to the drawings.
Example 2 >
Fig. 11 is a perspective view showing a mounting portion formed on the resin molded product of example 2. Fig. 11 corresponds to fig. 5 described above.
In the resin molded product 10A of example 2, the connecting portion 26A formed on the mounting portion 20A is formed along the 2 nd side wall portion 23. Other basic structures are the same as those of the resin molded product 10 (see fig. 5) of example 1. For the same parts as in embodiment 1, symbols are used, and detailed description is omitted.
The connecting portion 26A has a substantially triangular shape and is provided substantially parallel to the 1 st side wall portion 21 and the 2 nd side wall portion 23. The connecting portion 26A is also provided substantially parallel to the 1 st side wall portion connecting portion 21 b. The connecting portion 26A may have a substantially quadrangular shape, and the shape may be arbitrary.
The resin molded product 10A of example 2 having the above configuration also achieves the effects specified by the present invention.
Next, embodiment 3 will be described with reference to the drawings.
Example 3 ]
Refer to fig. 12. Fig. 12A shows the mounting portion formed on the resin molded product of example 3 in a state of being seen from below. Fig. 12B shows the mounting portion formed on the resin molded product of example 3 in a state of being viewed from above. Fig. 12A corresponds to fig. 5 described above. Fig. 12B corresponds to fig. 4 described above.
In the resin molded product 10B of example 3, the 1 st side wall portion main body portion 21Ba constituting the mounting portion 20B is formed in a substantially L-shape. Other basic structures are the same as those of the resin molded product 10 (see fig. 5) of example 1. For the same parts as in embodiment 1, symbols are used, and detailed description is omitted.
The 1 st side wall portion 21B has: a 1 st side wall portion main body portion 21Ba formed in a substantially L-shape; and a 1 st side wall portion connecting portion 21Bb extending from a lower portion of the 1 st side wall portion main body portion 21Ba to the rear surface 11b of the base material 11.
The 1 st side wall main body portion 21Ba has: a 1 st main body portion 21Bc extending substantially perpendicularly to the step portion 22; and a 2 nd main body portion 21Bd extending at an end of the 1 st main body portion 21Bc so as to be away from the opening 28.
The 1 st side wall portion connecting portion 21Bb is formed at a lower portion of an end portion of the 2 nd main body portion 21 Bd. On the other hand, the 1 st side wall portion connecting portion 21Bb is not formed at a part of the lower portion of the 2 nd main body portion 21 Bd. That is, the 1 st side wall portion connecting portion 21Bb is formed at a part of the lower portion of the 2 nd main body portion 21 Bd.
When the end of the 2 nd main body 21Bd connected to the 1 st main body 21Bc is one end and the opposite end is the other end, the 1 st side wall portion connecting portion 21Bb is preferably formed at a part including at least the lower portion of the other end.
The 1 st side wall portion connecting portion 21Bb is formed substantially parallel to the connecting portion 26. The upper surface (outer surface) of the 1 st side wall portion connecting portion 21Bb is continuous with the upper surface (outer surface) of the 2 nd main body portion 21 Bd. The 1 st side wall portion connecting portion 21Bb has a wall thickness smaller than that of the 2 nd main body portion 21 Bd.
The resin molded product 10B of example 3 having the above configuration also achieves the effects specified by the present invention.
The outer surface of the 1 st side wall portion connecting portion 21Bb is continuous with the outer surface of the 1 st side wall portion main body portion 21Ba, and the 1 st side wall portion connecting portion 21Bb has a wall thickness smaller than that of the 1 st side wall portion main body portion 21 Ba. By increasing the mounting rigidity of the mounting portion 20B, the wall thickness is reduced, and the occurrence of shrinkage can be suppressed. Further, by making the outer surface of the 1 st side wall portion connecting portion 21Bb coplanar with the outer surface of the 1 st side wall portion main body portion 21Ba, the shape of the molding die can be simplified.
Next, embodiment 4 will be described with reference to the drawings.
Example 4 ]
Refer to fig. 13. Fig. 13 shows the mounting portion formed on the resin molded product of example 4 in a state of being viewed from the front. Fig. 13 corresponds to fig. 6 described above.
In the resin molded product 10C of example 4, the 2 nd side wall portion connecting portion 26C is formed from the lower portion of the 2 nd side wall portion 23, and is formed to the back surface 11b of the base material 11. On the other hand, the connecting portion 26 is not formed at the lower portion of the connecting portion 24 (see fig. 6). Other basic structures are the same as those of the resin molded product 10 (see fig. 6) of example 1. For the same parts as in embodiment 1, symbols are used, and detailed description is omitted.
The mounting portion 20C includes a 2 nd side wall portion connecting portion 26C extending from a lower portion of the 2 nd side wall portion 23 to the rear surface 11b of the base material 11. The 2 nd side wall portion connecting portion 26C is formed substantially parallel to the 1 st side wall portion connecting portion 21 b. The outer surface of the 2 nd side wall portion connecting portion 26C is continuous with the outer surface of the 2 nd side wall portion 23. The wall thickness of the 2 nd side wall portion connecting portion 26C is smaller than the wall thickness of the 2 nd side wall portion 23.
The longitudinal direction is a direction perpendicular to the thickness direction of the 2 nd side wall portion 23. The 2 nd side wall portion connecting portion 26C is formed at a part of the lower portion of the 2 nd side wall portion 23 with reference to the longitudinal direction of the 2 nd side wall portion 23. By matching the longitudinal directions of the 1 st side wall portion connecting portion 21b and the 2 nd side wall portion connecting portion 26C, it is possible to suppress a decrease in appearance.
The resin molded product 10C of example 4 having the above configuration also achieves the effects specified by the present invention.
The outer surface of the 2 nd side wall portion connecting portion 26C is continuous with the outer surface of the 2 nd side wall portion 23, and the wall thickness of the 2 nd side wall portion connecting portion 26C is smaller than the wall thickness of the 2 nd side wall portion 23. By increasing the mounting rigidity of the mounting portion 20, the wall thickness can be reduced, and the occurrence of shrinkage can be suppressed. Further, by forming the outer surface of the 2 nd side wall portion connecting portion 26C to be coplanar with the outer surface of the 2 nd side wall portion 23, the shape of the molding die can be simplified.
Further, as described above, since the stepped portion 22 is formed, the occurrence of barbs can be prevented. The length and thickness of the 2 nd side wall portion connecting portion 26C can be easily adjusted by performing adjustment of the slide die. By performing adjustment to gradually lengthen or thicken the 2 nd side wall portion connecting portion 26C, occurrence of shrinkage can be suppressed, and sufficient mounting rigidity can be ensured.
Next, embodiment 5 will be described with reference to the drawings.
Example 5 >
Refer to fig. 14. Fig. 14 shows the mounting portion formed on the resin molded product of example 5 in a state of being viewed from the front.
In the resin molded article 10D of example 5, the step connection portion 26D is formed from the lower portion of the step 22 to the back surface 11b of the base material 11. On the other hand, the connecting portion 26 is not formed at the lower portion of the connecting portion 24 (see fig. 12). Other basic structures are the same as those of the resin molded product 10B (see fig. 12A) of example 3. For the same parts as embodiment 3 (including the same parts as embodiment 1), symbols are used, and detailed description is omitted.
The mounting portion 20D includes a step portion coupling portion 26D extending from a lower portion of the step portion 22 to the rear surface 11b of the base material 11. The step portion connecting portion 26D is formed substantially parallel to the 1 st side wall portion connecting portion 21 b. The upper surface (outer surface) of the step portion coupling portion 26D is continuous with the upper surface (outer surface) of the step portion 22. The wall thickness of the step connection portion 26D is smaller than the wall thickness of the step 22.
The direction perpendicular to the thickness direction of the step portion 22 is defined as the longitudinal direction. The step connection portion 26D is formed at a part of the lower portion of the step 22 with reference to the longitudinal direction of the step 22.
The resin molded product 10D of example 5 having the above configuration also achieves the effects specified by the present invention.
The outer surface of the step connection portion 26D is continuous with the outer surface of the step 22, and the wall thickness of the step connection portion 26D is smaller than the wall thickness of the step 22. By increasing the mounting rigidity of the mounting portion 20, the wall thickness can be reduced, and the occurrence of shrinkage can be suppressed. Further, by forming the outer surface of the step connection portion 26D to be coplanar with the outer surface of the step 22, the shape of the molding die can be simplified.
Further, as described above, since the stepped portion 22 is formed, the occurrence of barbs can be prevented. By adjusting the slide die, the length and thickness of the step connection portion 26D can be easily adjusted. By performing adjustment to gradually lengthen or thicken the step connection portion 26D, occurrence of shrinkage can be suppressed, and sufficient mounting rigidity can be ensured.
The resin molded product of the present invention has been described by taking a resin member mounted on a vehicle as an example, but the present invention is not limited to these embodiments.
In addition, the embodiments may also be appropriately combined. For example, the connection portion 26A having a substantially triangular shape may be used as a connection portion to be connected to the back surface of the base material 11 from the step portion. Further, the gap may be formed, and two or more of the connecting portion, the 2 nd side wall portion connecting portion, and the step portion connecting portion may be formed in one mounting portion. In the case of using the 1 st side wall portion 21B having a substantially L-shape, the 1 st side wall portion connecting portion 21Bb may be formed in the 1 st main body portion 21Bc.
That is, the present invention is not limited to the examples as long as the actions and effects of the present invention are obtained.
Industrial applicability
The resin molded article of the present invention is preferably used as a part for decorating a vehicle.
Claims (6)
1. A resin molded article characterized in that,
the resin molded product is integrally formed with a base material having an appearance surface that can be visually confirmed from the outside and a mounting portion protruding from the back surface of the base material for mounting a mounting member,
the mounting portion has a box shape with one surface opened, and has:
two side wall parts facing each other;
a connecting portion that connects ends of the side wall portions;
a mounting base portion that covers the side wall portions and the connection portion and is capable of fixing the mounting member; and
an opening portion surrounded by the side wall portion and the mounting base portion,
at least one of the two side wall portions has:
a 1 st side wall portion standing from the back surface at a position adjacent to the opening portion;
a step portion extending from an end of the 1 st side wall portion toward the opposite side wall portion; and
a 2 nd side wall portion extending in a direction away from the 1 st side wall portion with an end of the step portion as a starting point,
a gap is formed between the connecting portion, the step portion, the 2 nd side wall portion and the base material.
2. The resin molded article according to claim 1, wherein,
the mounting part is also provided with a connecting part which connects the connecting part and the base material,
the outer surface of the connecting part is continuous with the outer surface of the connecting part,
the wall thickness of the connecting portion is thinner than the wall thickness of the connecting portion.
3. The resin molded article according to claim 1, wherein,
the mounting portion further has a 2 nd side wall portion connecting the 2 nd side wall portion and the base material,
the outer surface of the 2 nd side wall portion connecting portion is continuous with the outer surface of the 2 nd side wall portion,
the wall thickness of the 2 nd side wall portion connecting portion is thinner than the wall thickness of the 2 nd side wall portion.
4. The resin molded article according to claim 1, wherein,
the mounting portion further has a step portion connecting the step portion and the base material,
the outer surface of the step portion connecting portion is continuous with the outer surface of the step portion,
the wall thickness of the step connection portion is thinner than the wall thickness of the step portion.
5. The resin molded article according to claim 1, wherein,
the step portion is formed substantially parallel to the connecting portion.
6. The resin molded article according to claim 1, wherein,
the 1 st side wall portion has a length shorter than that of the 2 nd side wall portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-103839 | 2018-05-30 | ||
| JP2018103839A JP6756776B2 (en) | 2018-05-30 | 2018-05-30 | Resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110549958A CN110549958A (en) | 2019-12-10 |
| CN110549958B true CN110549958B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910287750.4A Active CN110549958B (en) | 2018-05-30 | 2019-04-11 | Resin molded article |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US10864863B2 (en) |
| JP (1) | JP6756776B2 (en) |
| CN (1) | CN110549958B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11772578B2 (en) * | 2021-04-29 | 2023-10-03 | Honda Motor Co., Ltd. | Plastic vehicle body components and related attachment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003063321A (en) * | 2001-08-27 | 2003-03-05 | Kinugawa Rubber Ind Co Ltd | Exterior part for vehicle |
| CN102673508A (en) * | 2011-03-15 | 2012-09-19 | 京洛株式会社 | Impact energy absorber for vehicle and method for forming the same |
| JP2016068585A (en) * | 2014-09-26 | 2016-05-09 | ダイハツ工業株式会社 | Attachment structure of exterior member |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4161407B2 (en) | 1998-05-19 | 2008-10-08 | 東洋製罐株式会社 | Accumulator manufacturing method and mold for pump dispenser |
| US7165371B2 (en) * | 2000-10-13 | 2007-01-23 | Altia Hashimoto Co., Ltd. | Automobile molding and fastener therefor |
| JP4209237B2 (en) * | 2003-03-31 | 2009-01-14 | 株式会社ファルテック | Resin molded product for vehicle and manufacturing apparatus thereof |
| JP5080700B1 (en) * | 2012-04-03 | 2012-11-21 | サカエ理研工業株式会社 | Attachment structure of attachment member to vehicle outer plate, bolt holding member used therefor, and attachment |
| DE102013226182A1 (en) * | 2013-01-07 | 2014-07-10 | Ford Global Technologies, Llc | Arrangement for fastening an interior trim part to a vehicle body |
| US8979156B2 (en) * | 2013-03-22 | 2015-03-17 | Nissan North America, Inc. | Vehicle panel attachment arrangement |
| JP6261951B2 (en) * | 2013-10-31 | 2018-01-17 | 大和化成工業株式会社 | Clip mounting seat for interior parts or exterior parts |
| CN105691324B (en) * | 2016-03-24 | 2017-12-12 | 延锋彼欧汽车外饰***有限公司 | A kind of mounting structure |
| JP2021527787A (en) * | 2018-06-22 | 2021-10-14 | イリノイ トゥール ワークス インコーポレイティド | Clip assembly for fastening |
-
2018
- 2018-05-30 JP JP2018103839A patent/JP6756776B2/en active Active
-
2019
- 2019-04-11 CN CN201910287750.4A patent/CN110549958B/en active Active
- 2019-05-10 US US16/408,821 patent/US10864863B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003063321A (en) * | 2001-08-27 | 2003-03-05 | Kinugawa Rubber Ind Co Ltd | Exterior part for vehicle |
| CN102673508A (en) * | 2011-03-15 | 2012-09-19 | 京洛株式会社 | Impact energy absorber for vehicle and method for forming the same |
| JP2016068585A (en) * | 2014-09-26 | 2016-05-09 | ダイハツ工業株式会社 | Attachment structure of exterior member |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110549958A (en) | 2019-12-10 |
| JP6756776B2 (en) | 2020-09-16 |
| US20190366946A1 (en) | 2019-12-05 |
| JP2019206155A (en) | 2019-12-05 |
| US10864863B2 (en) | 2020-12-15 |
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